13340389 has 4 divisors (see below), whose sum is σ = 13355424. Its totient is φ = 13325356.

The previous prime is 13340357. The next prime is 13340407. The reversal of 13340389 is 98304331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98304331 = 233 ⋅421907.

It is a cyclic number.

It is not a de Polignac number, because 13340389 - 2⁵ = 13340357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13340389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6097 + ... + 7990.

It is an arithmetic number, because the mean of its divisors is an integer number (3338856).

Almost surely, 2^13340389 is an apocalyptic number.

It is an amenable number.

13340389 is a deficient number, since it is larger than the sum of its proper divisors (15035).

13340389 is an equidigital number, since it uses as much as digits as its factorization.

13340389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 13340389 is about 3652.4497258689. The cubic root of 13340389 is about 237.1680400128.

The spelling of 13340389 in words is "thirteen million, three hundred forty thousand, three hundred eighty-nine".